ampguy
Veteran
without getting into specific lenses that have lens specific focus shift issues, are there any image quality issues when focusing at infinity where your lens is at infinity, vs say the hyperfocal distance or anywhere in between?
Another question is when using an IR (R72) filter with a camera that is focused on infinity, would the IQ be better if I focused a "few inches" in front of infinity, or more plausible, the hyperfocal distance plus some?
Picked up a Bower 46-52 step up adapter from one of those camera/electronics places on powell in union square, and am thinking of taking some IR photos with the M6 and Zeiss biogon 28/2.8, and the hexar AF both which have 46 filter sizes (and my R72 filter is 52).
I realize from past use with this that I need to add about 4-5 stops and that the focus issue is mainly up close (infinity focus worked fine beyond 100 feet with old Pentax *ist DL).
Another question is when using an IR (R72) filter with a camera that is focused on infinity, would the IQ be better if I focused a "few inches" in front of infinity, or more plausible, the hyperfocal distance plus some?
Picked up a Bower 46-52 step up adapter from one of those camera/electronics places on powell in union square, and am thinking of taking some IR photos with the M6 and Zeiss biogon 28/2.8, and the hexar AF both which have 46 filter sizes (and my R72 filter is 52).
I realize from past use with this that I need to add about 4-5 stops and that the focus issue is mainly up close (infinity focus worked fine beyond 100 feet with old Pentax *ist DL).